Crank your engine and turn the AC on high cool, high fan. If your recharging hose is equipped with a pressure gauge, check it to determine if the system needs refrigerant. If the pressure holds steady in the recommended range, the system is full and should not be charged.
The driving distance between Dallas, TX and McKinney, TX is 32 miles. The driving time would be approximately 35 minutes if driving non-stop in good conditions. (The driving time does not take into consideration conditions such as weather, road work and rush hour traffic in urban areas.).
Population of McKinney, TX. Last official estimated population of McKinney city (Collin County**, Texas state) was 156,767 (year 2014)[1]. This was 0.049% of total US population and 0.57% of total Texas state population. Area of McKinney city is 62.8 miÂ² (=162.8 kmÂ²)[6], in this year population density was 2,494.38 p/miÂ². If population growth rate would be same as in period 2010-2014 (+4.57%/yr), McKinney city population in 2017 would be 179,247*.